Tottenham manager hails his side's "vital" Champions League win

Mauricio Pochettino says Son Heung-min is "on fire" after the striker scored the winner in Tottenham's 1-0 victory over CSKA Moscow in the Champions League.

Spurs dominated possession and had 22 shots in the newly-built CSKA Arena but in the end it was only Son's 71st-minute strike that secured the visitors a crucial three points.

The South Korean has now scored five goals in as many games this season, and three in his last two, an impressive return for a player that was almost sold in the summer, one year after arriving from Bayer Leverkusen.

Son's form has also minimised the impact felt by the loss of Harry Kane, who remains out with an ankle ligament injury and could be set for at least another month on the sidelines.

"I think it is key," Pochettino said of Son's recent success. "It is very important that not only Harry, who was good before his injury and scored, that now another player has scored and that is very important for the team.

"I feel very pleased for Sonny. He is on fire and to keep this form is very important for us."

Son started on the left of an attacking three but was pushed into a central role up front in the second half, as Pochettino made the bold move of replacing striker Vincent Janssen with the pace of winger Georges-Kevin Nkoudou.

The change worked, as five minutes later Erik Lamela slid through Son and he poked the ball under Igor Akinfeev to finally break the deadlock.